To gemebal ho tobs



Feb. 26, 1929. 1,703,328

F. A. WHITTEN SPRING SUSPENSION Filed Aug. 5, 1925 that it have securedthe e;

Patented Feb. 25, l929i FRANK A. wnrr'rniv, or Burners,

ASEEG-lk PORATION, 035 DETROIT, MICHIGAN A COLt-PGBATEIQN OF DhLARVARIE.

Application August and vibrations wliici trensm *ed it iron springsiuspension is c to the frame b novel connections i mit greatly varied roven'ient of "the the springs with respect to the vehicle i i thereby aborbing muny of the reed shocks and relieving strains, particularlytwisting strains, to which the leaf springs are sul jected.

The specific end connection which i have found to be most setisfectoryis one which permits substantially universal movement the end of thespring with respect to the frame at the some time embodying a cushioningneens for yieldingly resisting movements of the ends of the springs thuseliminating one source of shock.

Referring to the drawings which show preferred eii'ibodiment of myinvention:

Figure l is a side el vation of ii chassis to which my invention hasbeen applied;

Figure 2 is a side elevation partly in section, showing my improved endconnection; and

Figure 3 is ure 2.

In Figure 1, l have ueuoted by the reference character i a conventionalframe supported by wheels 6 mounted upon the usual axles 8. Between theaxles have interposed springs which 11111)! semi-elliptic type as shownat ill,

The forward end of the frontspring l have shown connected to the frmneby s conventional pivot shown at 1:2 while the rear a section on line 33of Big;-

be of the end of the front spring and both ends of the rear spring Ihere showi'i conn cted to the w i 'move endwise '1 .u T and toe ilitilleilees. Serie in). trees.

coil sprino's 26 which Stllitlllnll the member 16 heeri at one endagainst the cars 18 and at their other ends against llttiiffQS formedupon cup-shaped members 28 which serve to no; such as shown at 30 inposipuclting serves as a wiper to re ll particles which may co not uponthe member ill and also to prevent the UritJtlPG of oil which issupplied to the sliding surfaces from the reservoir 32 forn'ied in themember 16 through the duct lhe pivot bolt 24 may be lubricated by enyconvenient means such as shown at 36.

In addition to pern'iitting maximum flexibility in the connection of theends of the spring to the frame and thus absorbing a great variety ofshocks the present const "uc tion has the advantage that it permits easyassembly of the springs for the arms 22 may readily be adjusted so thatthe openings therein aline with the eye formed in the end of the springpermitting ready passage of the bolt 24. In prior constructions this assembly has frequently be n difficult of accomplishment for the earsformed upon the ends of the springs cannot be manufa tured withsufficient accuracy so that they will always sline with the openings inthe shackle for the posse of the shackle bolt. Consequently it wasnecessary to twist the spring to get the bolt in position and thistwisting; greatly increased the weer on the parts.

it claim:

1. The con'ihinatioii of a vehicle frame, a loud bearing axle, u leefspring interposed betweei axle and frem end a connection be tween theend of the spring and the frame, including a hollow shaft eiztei'iding'longitudinally of the frame and having a lateral opening :1 coupling;cove slidnbly en aged on said shaft and over the opening in lions ofedji stm iit said hollow shafttion. 1

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the 'i'i'en'ie, and extending longitudinally thereof, a sieee at the endof the spring slidably engaging said guide shaft, said hollow shaftconstituting a lubricant reservoir and having a discharge port lendingto the engaging surfaces of the shaft and sliding sleeve, packing sezlisat the i'esgeethe ends 011 said sleeve and surrounding said shat",retain a1 cups for the packing ads, ii'tti g (W61 \he ends of saidsleeves but Jndepem- J and an-nib 1e tens-en n'ieens exei 2' the cups toniaintzin their relation sleeve ends.

load bearing axle, a leaf spring ried by the tfi'znne, Q :1 pair ofdependent ears spaced 1on 1*' y of the frame, at shaft euri'ied by saidears, a sleeve slidabiy engaged on aid shaft and transversely pivoted toan end ef the leai' spring, said shaft being formed to provide alni'n'icant reservoir, means for supplying lubricant to the engagingsurfaces, eir of cup-shaped members teieseopieniiy engaging the sieeveat the respective ends, thereof, pec Zing instei'iei eei'i'ied Within idcup-shaped members, and coil springs interposed between the respectivehrzuiazet ears and said enp-shapec members, wh erehy the cup-shapedmembers are maintained in engagement wvith said eeve.

In testimony whereof I nfiix my signature.

FRANK A. NHITTALN.

